是否有一个F5浏览器之间的差异，并刷新回发??（asp.NET） [英] Is there a difference between an F5 browser refresh and postback??(asp.NET)

问题描述

我是动态创建在不同的行asp.NET现有的数据网格

I am dynamically creating dragrids in different rows of an existing datagrid in asp.NET

我的生成DataGrid中有一列是TemplateColumn中（一个复选框列）。

My generated datagrids have a column which is TemplateColumn (a CheckBox Column).

在我父母的DataGrid，我有一个复选框模板列。当我选中或取消选中的复选框的值时，check_change方法被调用（自动回设置为true），动态生成的DataGrid中失去了检查的复选框（复选框全部选中再次）。不过，如果我检查所有的孩子（动态生成的）电网和preSS F5的复选框，它刷新的页面，但我仍然有我的检查复选框。

In my parent datagrid, I have a template column with checkboxes. when I check or uncheck the value of the check box, the check_change method is called (autopostback is set to true), the dynamically generated datagrids lose the checked checkboxes (the checkboxes are all unchecked again). However, if i check any of the checkboxes of the child (dynamically generated) grids and press F5, it refreshes the page but still I have my checked checkboxes.

这是怎么回事？怎么又回来后，从刷新F5不同???理解这可能会帮助我在这里解决我的问题：<一href="http://stackoverflow.com/questions/3307878/datagrid-tree-two-levels-dynamically-generated-grids-cannot-be-altered">DataGrid没有被改变！

What's happening ?? how is post-back different from refresh F5??? understanding this might help me fix my problem here :DataGrid not being altered!

推荐答案

这很简单，浏览器缓存响应。所以，如果你preSS F5，你会一般见到的网格与检查复选框各一次。但是，如果你做了一回后，在code，你强制浏览器连接到服务器并发布数据。

It's simple, the browser caches the response. So if you press F5, you'd generally see your grid with the checked checkboxes each time. But if you do a post-back in code, you force the browser to connect to the server and post the data.

然后，它会等待来自服务器的响应，并返回了什么回来后的原因了。

It will then wait for a response from the server, and return whatever the reason for the post-back was.

讨厌，但这就是浏览器。您可以强制完全刷新比模拟一回后通过按Ctrl + F5键。

Annoying, but that's how browsers work. You can force a complete refresh than emulates a post-back by hitting Ctrl+F5.

这是（有时）依赖于浏览器，因为当你在这里描述的不是所有的浏览器都做得一样。

This is (sometimes) browser dependent because not all browsers will act the same as you described here.

如果一回后是必要的，但你仍想保​​留的复选框状态为选中，我推荐一个AJAX调用。

If a post-back is necessary but you still want to keep the checkbox status as checked, I'd recommend an AJAX call instead.

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